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prisoha [69]
3 years ago
12

What product of two consecutive whoole numbers is 156 answer .com?

Mathematics
2 answers:
Ivan3 years ago
8 0
Let one number be x.
The other number is + 1.

The product of these 2 number is 156.
x (x + 1) = 156
x ² + x - 156 = 0
(x - 12)(x + 13) = 0
x = 12 or x = - 13 (rejected, whole number cannot be negative)

When x = 12
x + 1 = 13

--------------------------------------------------------------------------------------------------------
Answer: The two numbers are 12 and 13.
--------------------------------------------------------------------------------------------------------
vesna_86 [32]3 years ago
8 0
HELLO DEAR,

let the no. be x and (x+1)

=> x(x+1) = 156

=> x² + x = 156

=> x² + x - 156 = 0

=> x² - 13x + 12x - 156 = 0

=> x(x-13) + 12 (x-13) = 0

=> (x + 12)(x-13)

=> x = -12

AND,

X = 13


I HOPE ITS HELP YOU DEAR,
THANKS
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A number is called evil if it has 666 in it. How many 7 digit numbers are evil?
defon

Step-by-step explanation:

There are 5 different positions of 666:

666////

/666///

//666//

///666/

////666

The forward dashes represent any number from 0 to 9.

Case 1: "666////"

Number of ways = 10⁴ = 10,000.

Case 2: The other positions.

Since the 1st forward dash cannot be 0 (leading digit),

Number of ways for each position = 9 * 10³ = 9,000

Number of ways for all 4 positions = 9,000 * 4 = 36,000.

Total evil numbers = 10,000 + 36,000 = 46,000.

5 0
3 years ago
Write the quadratic equation whose roots are 3 and -1, and whose leading coefficient is 5.
Assoli18 [71]

Answer:

5x² - 10x - 15 = 0

Step-by-step explanation:

Given that the roots are x = 3 and x = - 1, then the factors are

(x - 3) and (x + 1) and the quadratic is the product of the factors, that is

f(x) = a(x - 3)(x + 1) ← a is a multiplier

Here a = 5, thus

f(x) = 5(x - 3)(x + 1) ← expand factors using FOIL

     = 5(x² - 2x - 3) ← distribute parenthesis by 5

     = 5x² - 10x - 15

Thus equation is

5x² - 10x - 15 = 0

6 0
4 years ago
Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
barxatty [35]

Answer:

x=9,-1  and x^2+(-8)x=9

Explanation:

we have been given with the quadratic equation x^2-8x-9

we compare the given quadratic equation with general quadratic equation

general quadratic is ax^2+bx+c=0

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant D=b^{2}-4ac

D=(-8)^2-4(1)(-9)=100

Now, to find the value of x

Formula is x=\frac{-b\pm\sqrt{D}}{2a}

Now, substituting the values we will get

x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1

And rewritting the given equation by  shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

x^2+bx=c

4 0
3 years ago
Read 2 more answers
Find the lateral and total surface area for the cone. If necessary, round to the nearest tenth and leave the
bija089 [108]

9514 1404 393

Answer:

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Step-by-step explanation:

The lateral surface area is the product of half the circumference, and the slant height:

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The total surface area adds the area of the base to that:

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3 0
3 years ago
Algebra 1 -5c+d=2c find for c
beks73 [17]

Answer:

d/7 = c

Step-by-step explanation:

-5c+d=2c

Add 5c to each side

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d = 7c

Divide each side by 7

d/7 = 7c/7

d/7 = c

8 0
3 years ago
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